* {
  margin: 0px;
  padding: 0px;
}

body {
  background-color: 014e62;
}
.back {
  width: 80%;
  margin: 0px auto;
  .top {
    width: 100%;
    height: 10vh;
    background-color: aquamarine;
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    > h3 {
      color: white;
      font-size: 20px;
      line-height: 40px;
    }
  }
  .imgbox {
    width: 100%;
    height: 50vh;
    > img {
      width: 100%;
      height: 100%;
    }
  }
  .login {
    width: 100%;
    /* height: 50vh; */
    background-color: bisque;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    > div {
      width: 100%;
      margin: 10px auto;
      display: flex;
      justify-content: center;
    }
    > .liuyan {
      width: 100%;
      height: 80px;
      display: unset;
      span {
        font-size: 20px;
        line-height: 80px;
        color: white;
        background-color: aqua;
        border-radius: 4px;
        margin-left: 30px;
        padding: 0px 5px;
      }
    }
  }
}

@media screen and(max-width:1280px) {
}
@media screen and(max-width:1028px) {
}
@media screen and(max-width:768px) {
}
